<template>
  <div class="star" :class="'star-'+size">
    <span class="star-item" v-for="(sc,index) in starClasses" :class="sc" :key="index"></span>
  </div>
</template>

<script>
const class_on = "on";
const class_half = "half";
const class_off = "off";
export default {
  props: {
    score: Number,
    size: Number
  },
  computed: {
    starClasses() {
      const { score } = this;
      const scs = [];
      const scoreInteger = Math.floor(score);
      for (var i = 0; i < scoreInteger; i++) {
        scs.push(class_on);
      }
      if (score * 10 - scoreInteger * 10 >= 5) {
        scs.push(class_half);
      }
      while (scs.length < 5) {
        scs.push(class_off);
      }
      return scs
    }
  }
};
</script>

<style lang="stylus">
@import '../../common/stylus/mixins.styl'
.star // 2x图 3x图
  float left
  font-size 0
  .star-item
    display inline-block
    background-repeat no-repeat
  &.star-48
    .star-item
      width 20px
      height 20px
      margin-right 22px
      background-size 20px 20px
      &:last-child
        margin-right 0
      &.on
        bg-image('./images/star48_on')
      &.half
        bg-image('./images/star48_half')
      &.off
        bg-image('./images/star48_off')
  &.star-36
    .star-item
      width 15px
      height 15px
      margin-right 6px
      background-size 15px 15px
      &:last-child
        margin-right 0
      &.on
        bg-image('./images/star36_on')
      &.half
        bg-image('./images/star36_half')
      &.off
        bg-image('./images/star36_off')
  &.star-24
    .star-item
      width 10px
      height 10px
      margin-right 3px
      background-size 10px 10px
      &:last-child
        margin-right 0
      &.on
        bg-image('./images/star24_on')
      &.half
        bg-image('./images/star24_half')
      &.off
        bg-image('./images/star24_off')
</style>
